Your particular circumstances and the way you use electricity will impact what size solar system is best for you. Here are some smart tips to be aware of when making the decision.
Research. When do you use your electricity? Is there room to move? If you use a large amount of electricity during the day when the sun is shining, a larger solar system can help you offset the electricity you buy from the grid. However, if you only use a small amount of electricity during the day, a smaller system might be better. Are you able to get shifty and move your electricity usage around to benefit from the electricity generated by your solar system?
Consider your electricity usage now and in the future. If your electricity usage is likely to increase due to factors such as; additional appliances, a new swimming pool, renovations or new household members, then you may want to consider a system that is a little larger.
Budget. How much are you prepared to pay?
Space. How much unshaded roof space do you have? You need the sun to shine on your solar system for optimal performance.
Orientation. Which direction will the solar panels on your roof be facing? North or west facing will generate more electricity as they have the most sun exposure.
From our experience, the most common method of sizing a solar system for a typical home is to aim for about 30% of the electricity you generate to be fed into the grid. This allows for increased electricity usage in the future. A home with limited electricity growth expected in the future may choose a smaller solar system.
If you’d like to know more about average daily solar generation for different system sizes have a look at the Clean Energy Council guide. Keep in mind factors such as panel orientation, angle, shading and dirt can all impact your solar generation.